# Standing (Stationary waves)

• Physics_Lovvee
In summary, standing (stationary) waves are a type of wave phenomenon that occurs when two waves with the same frequency and amplitude travel in opposite directions and interfere with each other. This results in a pattern of nodes and antinodes that appear to be standing still. They are formed when a wave reflects off a fixed boundary and combine with the original wave. Some properties of standing waves include the presence of nodes and antinodes, the ability to transfer energy without physical movement, and the fact that they only occur at specific frequencies. They can be found in everyday objects and technologies, and differ from traveling waves in that they do not physically move through space and have fixed points of no displacement and maximum displacement.

#### Physics_Lovvee

Can standing waves be both transverse and longitudinal?

Resonance in musical instruments relies on standing wave.

Physics_Lovvee said:
Can standing waves be both transverse and longitudinal?
In a waveguide, we can have both transverse waves and a longitudinal component.

tech99 said:
In a waveguide, we can have both transverse waves and a longitudinal component.
Also, the most commonly observed waves - water waves- are surface waves and there is displacement both longitudinally and vertically. The surface waves 'look' sinusoidal at low amplitudes but become very much more 'peaky' at high amplitude.

## What are standing (stationary) waves?

Standing (stationary) waves are a type of wave phenomenon that occurs when two waves with the same frequency and amplitude travel in opposite directions and interfere with each other. This results in a pattern of nodes (points of no displacement) and antinodes (points of maximum displacement) that appear to be standing still.

## What causes standing waves to form?

Standing waves are formed when two waves with the same frequency and amplitude travel in opposite directions and interfere with each other. This can occur when a wave reflects off a fixed boundary, such as a wall, and combines with the original wave to create a stationary wave pattern.

## What are the properties of standing waves?

Some properties of standing waves include the presence of nodes and antinodes, the ability to transfer energy without the physical movement of the wave itself, and the fact that they only occur at specific frequencies (called resonant frequencies).

## What are some real-world examples of standing waves?

Standing waves can be found in many everyday objects and phenomena, such as musical instruments (e.g. the strings of a guitar or the air column in a flute), microwave ovens, and earthquake waves. They are also used in various technologies, such as radio and television broadcasting antennas.

## How do standing waves differ from traveling waves?

The main difference between standing waves and traveling waves is that standing waves do not physically move through space, while traveling waves do. Additionally, standing waves have fixed points of no displacement (nodes) and points of maximum displacement (antinodes), while traveling waves have a continuously changing shape as they propagate through space.